Home / 4,079.80-6,117.90-1,613.80

Finding the Fourth Proportional to 4,079.80, 6,117.90 and 1,613.80

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Solution

The fourth proportional to 4,079.80, 6,117.90 and 1,613.80 is: 2,419.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.80 : 6,117.90 = 1,613.80 : x
  2. Step 2: Convert to fraction form
    4,079.80/6,117.90 = 1,613.80/x
  3. Step 3: Cross multiply
    4,079.80x = 6,117.90 × 1,613.80
  4. Step 4: Simplify right side
    4,079.80x = 9,873,067.02
  5. Step 5: Solve for x
    x = 9,873,067.02/4,079.80
  6. Step 6: Final answer
    x = 2,419.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.